Raw H1 SDI to DVCPROHD clips for U all to test...

Elton

Elton

Veteran
Hey everybody,

I have some raw clips on the iDisk for whoever wants a semi-challenging chroma key test.

www.homepage.mac.com/mrbarlowelton

These clips were piped in SDI direct to FCP, bypassing HDV, and compressed in DVCProHD. One is a 24F clip converted to DV100 24P, the other is a straight 1080i. There are also a couple of uncompressed 10bit frames...one 24F and one 1080i for you guys to compare. Edit: There are now some conversions from HDV in DVCProHD and PhotoJPEG format for those who would like to try keying from HDV source. There's also a "CityPan" clip to composite the greenscreen shots with if you want to. I converted the m2t's in MPEG Streamclip.

I didn't have time to go get a better chroma key 8x8 from the studio, so I just had my wife pick up 2 yards of chroma green looking cloth from the fabric store. It was a very dim, rainy day today and this was all natural light.

I thought some of you with keying chops might be interested to take a crack at this stuff.

Please post a frame of your results if you can.
 
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Batutta said:
This took me about 5 minutes in Final Cut Pro with the built in keyer.

green kids test
Click to expand...

Cool!! Thanks for posting. I'm going to play with it in Motion with the Primatte keyer when I have time this weekend.
 
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Batutta,

I finally saw the clip, very nice. I had a feeling it wouldn't be too much work for a pretty clean key. I'm happy to know that it only took FCP. Just imagine some of the higher end software with a properly lit greenscreen. Bada bing!

I'll post your clip on the iDisk.

Thank you very much for contributing!
 
Final Cut's built in keyer is actually better than the Primatte keyer in motion. It's much more flexible. With Primatte in Motion you pretty much need a perfect green screen to start with, and forget about DV. The steps I take in FCP are to highlight the brightest part of the green, then go into the slider controls on the plug in. First I widen the top slider which sets your color range, usually like a triangle, narrow at the top, wide at the bottom. Then I do the same to the luma slider until most of the green is gone. If there's still some stubborn green that won't come out I'll adjust the saturation slider as well. The next step, I thin the edges slightly, if I need to I add some softness to the matte, usually just one increment, then, if there's any green left on the moving parts of the frame I adjust the spill supressor until the green is gone, but before the edges turn purple. Final Cut's keyer is great in my opinion. I think a lot of people turn to other software because they try to key DV footage, but with higher quality footage there's no reason to go outside the program.
 
Oh, and also use the Chroma Keyer filter in Final Cut, not the Blue and Green Screen filter.
 
I'm not at that computer right now, so this isn't exact, but it should look like something below--



In my directions above, I said adjust the spill supressor, when I meant the enhance slider.
 
Batutta said:
Oh yeah, your kids (if they are yours) are adorable.
Click to expand...

Thanks, man. The girl's mine, the boy is her cousin. They were game for the test for about 5 minutes total. Kids....whaddya gonna do?

Thanks also for posting the details. Very helpful.
 
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